shell批量免秘钥登录

系统运维

注意：ip.txt和send_ssh_key.sh必须在同一根目录下

# 根据以下格式写入服务器信息ip.txt，用于免密钥登录
#-----------
# ip:password
#192.168.1.110:7758521
#192.168.1.111:7758521
#192.168.1.112:7758521
#-----------

#!/bin/bash
# 生成ssh key
if [[ ! -f /root/.ssh/id_rsa ]];then
  echo gen ssh key
  ssh-keygen -t rsa -b 2048 -N \'\' -f /root/.ssh/id_rsa
fi
# 检测是否安装了 expect
if ! expect -v &>/dev/null;then
  echo install expect
  yum install expect -y
fi
# 循环文件中的ip
for p in $(cat ip.txt|grep -v \'#\');do
  ip=$(echo $p|cut -f1 -d:)       # 取出当前IP
  password=$(echo $p|cut -f2 -d:) # 取出当前密码
  # expect 交互过程
  expect -c 
spawn ssh-copy-id -i /root/.ssh/id_rsa.pub root@$ip
        expect {
                \\*yes/no*\\ {send \\yes\\r\\; exp_continue}
                \\*password*\\ {send \\$password\\r\\; exp_continue}
                \\*Password*\\ {send \\$password\\r\\;}
        }